Improvement in bung-cutter



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Letters Patent No. 88,030, dated Ma/rch 23, 1869.

IIVIPROVEMENT IN BUNG-CUTTER.

v The Schedule referred to in these Letters Patent and making part ofthe same.'

l *HON- To all whom it may concern Be it known that we, BENJAMIN GEYLERand FRED- ERICK GEYLER, of Cincinnati, in the, county of Haniilton, andState of Ohio, have invented a new and useful Improvement inBung-Gutters; and we do hereby declare that the followingis a full,clear, and exact description thereof, which will enableothers skilled inthe art to make and use the same, reference being had to theaccompanying drawings, forming part of' this specification.

-This invention relates to improvements in cutterheads, for cuttingbungs, whereby they may be readily adjusted, to out them of any desiredsize, andthe cut- -ting-tools may be fed up to the work' with facility,as

will be hereinafter described.

In the accompanying drawings--v Figure l represents a sectionalelevation of our improved cutter;

Figure 2 represents a side elevation of the same, with the sleeveremoved; and

Figure 3 represents a horizontal section of the same.

Similar' letters of reference indicate corresponding parts.

A represents the cutter-head, preferablymade ofcast-metal, havingtwo,four, 0r any other preferred number -of tool-holding grooves, B,-parallel With the axis ofthe same, in one plane, but angularlyfth'ereto,ina plane at right angles to the first-mentioned plane. It is alsoprovided with a shank, O, for securing it to a stock, or to the mandrelof a lathe.

Near the lower ends of the said grooves, they are provided with caps,D', for holding the cutters E, their gibs F, and keys G, in'place, andfor the support of set-screws, H. For clamping them together with therequisite amount of pressure, above the said caps, the grooves are openon the outside, and the keys are slotted, to admit the passage ofthetransverse keys I through mortises in the upper ends of the cutters, and

The keys G are provided with lugs at each end, to l hook over the endsof the side wallsl of the grooves B, to prevent beingl moved by thetools when they are moved by the sleeve. v

N represents a yielding centre-pin, arranged in an axial hole bored forit in the stock, and provided with a spiral spring, O, for throwing itout against the wood, in advance of the cutters, to centre and hold thesame, until the Acutters are brought into action. 'lhe upper -end'of thespring bears against the transverse keys I,

and is' pressed down by them in their forward movement against the pointofthe centre.

The adjustment of the cutters, to out bnngs of va.- rious sizes, isaccomplished by changing the key G from one side to the other of thesaid cutters, as will be readily understood.

Y Having thus described our invention,

We claim as new, and desire to secure by Letters PatentA The arrangementof the slotted head and shank A C, the sleeve L, keys I, slottedadjustable cutters E,

andslotted yielding centre-pin N, all

operate as herein shown and described. v

' BENJAMIN 'GEYLEIt FREDERICK GEYLER.

Aconstructed to Witnesses y G. DECKER,

PH. WIRZERNET.

